Is Mcrey Lake safe to swim in?

Good for swimming, clear water with low algae levels. Mcrey Lake has an overall water quality grade of B. Always check local health department advisories before swimming.

Muskoka District County, Ontario · Water Quality Report Card

Mcrey Lake

Grade B — Good

Mesotrophic

Mcrey Lake in Muskoka District, Ontario received a water quality grade of B (Good). Water clarity: 2 m visibility. Phosphorus: 14.7 µg/L.

Clarity: 2 m
Type: Mesotrophic

Where to stay →Safe to swim?

Mcrey Lake is a mesotrophic lake in Muskoka District County, Ontario. Water quality is graded B based on 2 sampling years through 2004. Compared to the 169 other monitored lakes in Muskoka District County, Mcrey Lake ranks #144 for water quality.

Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2004-05-06. Grade methodology: LakeGrade methodology.

Watch Mcrey Lake water quality

Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.

Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Murky, only visible to about 6.6 ft. Phosphorus level: 14.7 µg/L. Trophic State Index: 46.

Metric	Value	Grade
Water Clarity (Secchi Depth)	2 m	D
Phosphorus	14.7 µg/L	A
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	46	Mesotrophic

Moderate nutrients, good water quality

Where to stay near Mcrey Lake

Compare lakeside cabins, hotels, and vacation rentals near Mcrey Lake in Muskoka District, Ontario — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

Top-rated places to stay near Mcrey Lake

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

Planning a trip to Mcrey Lake?

Get lake water-quality report cards plus the best cabin & lodging deals near Mcrey Lake — straight to your inbox. No spam, unsubscribe anytime.

Fishing Mcrey Lake

→ Mcrey Lake fishing regulations (limits, seasons, special rules)

Location

Loading map…

County Ranking

Ranked #144 of 170 lakes in Muskoka District

Cleaner Lakes Within 30 Miles

Mcrey Lake holds Grade B. 3 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Muskoka District

Explore Mcrey Lake across LakeGrade

Lake Fishing Forecast

Species activity outlook by water temperature and season

Mesotrophic Lakes

Moderate nutrients, good water quality

The State of Ontario's Lakes

Ontario's cleanest and most-polluted lakes, ranked

More Ontario Lake Rankings

Cleanest lakes in Ontario

Top 25 by overall water quality score

Clearest lakes in Ontario

Top 25 by Secchi water clarity

Best swimming lakes in Ontario

Grade A/B + low algae filter

Family fishing lakes in Ontario

Panfish-rich, public access

All Ontario lakes

Full state directory

Other Grade B Lakes in Ontario

Cranberry Lake

Central Ontario · 1.9 m

Brady Lake

Haliburton · 3 m

Buck Lake

Parry Sound District · 1.8 m

Mirage Lake

Parry Sound District · Good

Oxtongue Lake

Haliburton · 2.9 m

St John Lake

Simcoe · 2.5 m

Mesotrophic Lakes in Ontario

Cranberry Lake Brady Lake Fish Lake Fawn Lake

More records, surveys & data sources

Where this data comes from

Measurements for Mcrey Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.

Data Sources

Water quality data from the EPA Water Quality Portal

Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion

Most recent sample: 2004-05-06

Monitoring stations:

Where to stay near Mcrey Lake →